---
title: SQL
description: Tauri Plugin providing an interface for the frontend to communicate with SQL databases through sqlx.
plugin: sql
---

import PluginLinks from '@components/PluginLinks.astro';
import Compatibility from '@components/plugins/Compatibility.astro';

import PluginPermissions from '@components/PluginPermissions.astro';
import { Tabs, TabItem, Steps } from '@astrojs/starlight/components';
import CommandTabs from '@components/CommandTabs.astro';

<PluginLinks plugin={frontmatter.plugin} />

Plugin providing an interface for the frontend to communicate with SQL databases through [sqlx](https://github.com/launchbadge/sqlx). It supports the SQLite, MySQL and PostgreSQL drivers, enabled by a Cargo feature.

## Supported Platforms

<Compatibility plugin={frontmatter.plugin} />

## Setup

Install the SQL plugin to get started.

<Tabs>
    <TabItem label="Automatic">

        Use your project's package manager to add the dependency:

        <CommandTabs npm="npm run tauri add sql"
        yarn="yarn run tauri add sql"
        pnpm="pnpm tauri add sql"
        bun="bun tauri add sql"
        cargo="cargo tauri add sql" />

    </TabItem>
    <TabItem label="Manual">

        <Steps>

        1.  Run the following command in the `src-tauri` folder to add the plugin to the project's dependencies in `Cargo.toml`:

            ```sh frame=none
            cargo add tauri-plugin-sql
            ```

        2.  Modify `lib.rs` to initialize the plugin:

            ```rust title="src-tauri/src/lib.rs" ins={4}
            #[cfg_attr(mobile, tauri::mobile_entry_point)]
    		    pub fn run() {
                tauri::Builder::default()
                    .plugin(tauri_plugin_sql::Builder::default().build())
                    .run(tauri::generate_context!())
                    .expect("error while running tauri application");
            }
            ```

        3.	Install the JavaScript Guest bindings using your preferred JavaScript package manager:

            <CommandTabs
                npm="npm install @tauri-apps/plugin-sql"
                yarn="yarn add @tauri-apps/plugin-sql"
                pnpm="pnpm add @tauri-apps/plugin-sql"
                bun="bun add @tauri-apps/plugin-sql"
            />

        </Steps>

</TabItem>
</Tabs>

After installing the plugin, you must select the supported database engine.
The available engines are Sqlite, MySQL and PostgreSQL.
Run the following command in the `src-tauri` folder to enable your preferred engine:

<Tabs>
  <TabItem label="Sqlite">

    ```sh frame=none
    cargo add tauri-plugin-sql --features sqlite
    ```

  </TabItem>
  <TabItem label="MySQL">

    ```sh frame=none
    cargo add tauri-plugin-sql --features mysql
    ```

  </TabItem>
  <TabItem label="PostgreSQL">
  
    ```sh frame=none
    cargo add tauri-plugin-sql --features postgres
    ```
  
  </TabItem>
</Tabs>

## Usage

All the plugin's APIs are available through the JavaScript guest bindings:

<Tabs>
  <TabItem label="SQLite">

The path is relative to [`tauri::api::path::BaseDirectory::AppConfig`](https://docs.rs/tauri/2.0.0/tauri/path/enum.BaseDirectory.html#variant.AppConfig).

```javascript
import Database from '@tauri-apps/plugin-sql';
// when using `"withGlobalTauri": true`, you may use
// const V = window.__TAURI__.sql;

const db = await Database.load('sqlite:test.db');
await db.execute('INSERT INTO ...');
```

  </TabItem>
  <TabItem label="MySQL">
```javascript

import Database from '@tauri-apps/plugin-sql';
// when using `"withGlobalTauri": true`, you may use
// const Database = window.__TAURI__.sql;

const db = await Database.load('mysql://user:pass@host/database');
await db.execute('INSERT INTO ...');

````
  </TabItem>
  <TabItem label="PostgreSQL">
```javascript

import Database from "@tauri-apps/plugin-sql";
const db = await Database.load("postgres://postgres:password@localhost/test");
await db.execute("INSERT INTO ...");

````

  </TabItem>
</Tabs>

## Syntax

We use [sqlx](https://docs.rs/sqlx/latest/sqlx/) as the underlying library and adopt their query syntax.

<Tabs>
  <TabItem label="SQLite">
Use the "$#" syntax when substituting query data
```javascript
const result = await db.execute(
  "INSERT into todos (id, title, status) VALUES ($1, $2, $3)",
  [todos.id, todos.title, todos.status],
);

const result = await db.execute(
"UPDATE todos SET title = $1, status = $2 WHERE id = $3",
[todos.title, todos.status, todos.id],
);

````
  </TabItem>
  <TabItem label="MySQL">
Use "?" when substituting query data
```javascript
const result = await db.execute(
  "INSERT into todos (id, title, status) VALUES (?, ?, ?)",
  [todos.id, todos.title, todos.status],
);

const result = await db.execute(
  "UPDATE todos SET title = ?, status = ? WHERE id = ?",
  [todos.title, todos.status, todos.id],
);
````

  </TabItem>
  <TabItem label="PostgreSQL">
Use the "$#" syntax when substituting query data
```javascript
const result = await db.execute(
  "INSERT into todos (id, title, status) VALUES ($1, $2, $3)",
  [todos.id, todos.title, todos.status],
);

const result = await db.execute(
"UPDATE todos SET title = $1, status = $2 WHERE id = $3",
[todos.title, todos.status, todos.id],
);

````
  </TabItem>
</Tabs>

## Migrations

This plugin supports database migrations, allowing you to manage database schema evolution over time.

### Defining Migrations

Migrations are defined in Rust using the [`Migration`](https://docs.rs/tauri-plugin-sql/latest/tauri_plugin_sql/struct.Migration.html) struct. Each migration should include a unique version number, a description, the SQL to be executed, and the type of migration (Up or Down).

Example of a migration:

```rust
use tauri_plugin_sql::{Migration, MigrationKind};

let migration = Migration {
    version: 1,
    description: "create_initial_tables",
    sql: "CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT);",
    kind: MigrationKind::Up,
};
````

### Adding Migrations to the Plugin Builder

Migrations are registered with the [`Builder`](https://docs.rs/tauri-plugin-sql/latest/tauri_plugin_sql/struct.Builder.html) struct provided by the plugin. Use the `add_migrations` method to add your migrations to the plugin for a specific database connection.

Example of adding migrations:

```rust title="src-tauri/src/main.rs" {1} {6-11} {17}
use tauri_plugin_sql::{Builder, Migration, MigrationKind};

fn main() {
    let migrations = vec![
        // Define your migrations here
        Migration {
            version: 1,
            description: "create_initial_tables",
            sql: "CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT);",
            kind: MigrationKind::Up,
        }
    ];

    tauri::Builder::default()
        .plugin(
            tauri_plugin_sql::Builder::default()
                .add_migrations("sqlite:mydatabase.db", migrations)
                .build(),
        )
        ...
}
```

### Applying Migrations

To apply the migrations when the plugin is initialized, add the connection string to the `tauri.conf.json` file:

```json title="src-tauri/tauri.conf.json" {3-5}
{
  "plugins": {
    "sql": {
      "preload": ["sqlite:mydatabase.db"]
    }
  }
}
```

Alternatively, the client side `load()` also runs the migrations for a given connection string:

```ts
import Database from '@tauri-apps/plugin-sql';
const db = await Database.load('sqlite:mydatabase.db');
```

Ensure that the migrations are defined in the correct order and are safe to run multiple times.

### Migration Management

- **Version Control**: Each migration must have a unique version number. This is crucial for ensuring the migrations are applied in the correct order.
- **Idempotency**: Write migrations in a way that they can be safely re-run without causing errors or unintended consequences.
- **Testing**: Thoroughly test migrations to ensure they work as expected and do not compromise the integrity of your database.

## Permissions

By default all potentially dangerous plugin commands and scopes are blocked and cannot be accessed. You must modify the permissions in your `capabilities` configuration to enable these.

See the [Capabilities Overview](/security/capabilities/) for more information and the [step by step guide](/learn/security/using-plugin-permissions/) to use plugin permissions.

```json title="src-tauri/capabilities/default.json" ins={4-5}
{
  "permissions": [
    ...,
    "sql:default",
    "sql:allow-execute",
  ]
}
```

<PluginPermissions plugin={frontmatter.plugin} />
